Gas meter



Jan. l5, 1929.

A. R. HUETTIG GAS METER 2 Sheets-Sheet Filed Feb. 28, 1924 A. R. HUETTIG `GAS METER Filed Feine, 1924 2 Sheets-Sheet 2 ...b M v xn 7 .d 7 d 2 2 u w 1|. 1 I

Jan. l5, 1929.

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Patented Jan. 15, 19,29.

UNITED" STATES PATENT OFFICE;

.ARNO B. HUETTIG, OF STRATFORD, CONNECTICUT, ASSIGNOR TO AMERICAN METER COMPANY, INCORPORATED, OF NEW YORK, `N. Y., A CORPORATION O1r DELAWARE GAS METER.

Application led February 28, 1924. Serial No. 695,725.

My invention relates to improvements in gas meters in which, by the aid of one central partition and two diaphragms, four measuring chambers are formed, and where the vibrations of the diaphragms arevtransmitted `into the valve chamber by means of a shaft. 4 t

Among the objects of my invention are, first, to produce a gas meter of the type which includes a diaphragm receiving portion consisting of a central `case and two concave coversthereior, and an overlying cap or valve enclosing portion. This whole re ce tacleis usually madeout of cast iron, or ot er suitable metal, to give the `enclosed `mechanism adequate protection. Secondly, by dividing the diaphragm receiving or measuring apartment into four chambers, by means of two iexible diaphragms and between them a suitable, partly or entirely flexible or pliable partition of light weight material occupying relatively little space, I reduce the weight and size of the meter considerably without in the least reducing the capacity of the meter. Thirdly, I utilize only one shaft and consequently one openin through the top wall of the casing (or stu ing box as commonly called) to convey the power generated by the diaphragm movement up to the valve chamber, thus, as compared to some meter constructions, reducing the number of or eliminating short shafts and short bearings, and so reducing friction and prolonging life of the mechanism. Furthermore, by employing a diaphragm carrier consisting cfa pair of brackets pivotally secured to each other between their ends, notwithstanding its sim licity, I afford eective support and guidance for the diaphragm and do away with the necessity for additional guides journaled in the condensa-v tion boxes. This type of carrier produces a shorter stroke and increased force at the junction of its brackets than the diaphragm ltself performs, or in other words, the extent of movement of the diaphragm may be lincreased without increasing the radius of throw of the shaft actuating crank arm. Another object has been to provide for the easy and accurate adjustment of the `diaphragm stroke as well as of the angular relation between the cranks carried by the power transmitting shaft to secure correct measuring and a smooth flow of gas.

One form of apparatus embodying my invention is illustrated in the accompanying drawings, 1n whlch Figure 1 is a `front elevation with one cover and one diaphragm removed,

Figure 2, a central vertical section, Figure 3, a horizontal section on the line 2 2 of Figure 2 showing particularly the carriers or diaphragms supporting brackets t and connecting links,

Figure 4, a plan view of the meter with the cap removed, showing Vthe valve actu-` 1 is provided with remova le concave covers 2 and` the top cap1 3 secured inoperative position by screwsA. Two diaphragms 5 and 6 are held in position byclamping them between the covers 2 and the case 1 and, in conjunction with the flexible partition 7 divide the main cavity into four measuring chambers 8, 9, 10, and 11. The cap 3 encloses the valves 12`which regulate the flow of gas into the measuring chambers by way of the ports 13, 14, 15, and 16, and its` discharge through an outlet` port 40. In the center of the case l "is vertically located the crank shaft 17, journaled in the support 18. The shaft 17 is supportedmby mand,leamdgi; through mirtiglt'ia'swsage or stufiin Wbox into the valve chamber and is provide with a crank 19 to operate theyalvesflQ b mmeans of the linksEZO "iidmatjtlie same time ac uates` the register'g''v'ement or indicator means 21 by means of a pin 22 secured to said crank 19.

The lower end of the shaft 17 fits tightly ash friction in thegyehgwoifmthe ewcran ha ing turnabitr'aidiswiieldi the proper posi ion `by the screw rod 26 having an annular groove engaging a slot in the latter oein 'ioidl l.- 1 nis, y s ng or tightening said screw rod the angular relation between the valve actuating crank 19 andsaid shaft actuating bell crank can he established or adjusted. Theconnecting pin of crank arm 25 is in the usual manner slidably adjustable in a terminal slot provided in said crank arm, its position therein being secured by 2,5, wFigurerv it ist the screw rod 28, thus affording eilective means for increasing or decreasing the stroke of crank arm 25 and simultaneously the displacement of the diaphragm 5, which is connected with crank arm 25 through a link 34. An inlet opening through the Wall of the case and which is normally closed as by a plug 29, permits the insertion of a tool to turn the screw rods 26 and 28 Without taking the meter apart.

To support thediaphragm, l provide in each of the measuring` chambers 9 and l0 a carrier consisting ot' two horizontally disposed brackets 30 hinged on opposite sides to the meter case atl and with their respective swinging ends connected to the diaphragms at 3Q, 32. The shearing or pivotal points of each pair ot `brackets are developed into pivot couplings 33 which are connected to the cranks 2a and 25 by the links 34 and 35 Within the chamber 10,

The link 34 is provi ded with a ilange and nut 36 to secure the link 34 to the flexible `or pliable partition 7 and close the hole in the latter by clamping the lieaible material between said nut and flange, thus rendering this partition between chambers 9 and l() gas-tight, and yet permitting the movements oi' diaphragm 5 to be transmitted to crank arm 25 by means of link 84 which carries the elastic or flexible membrane along with it While traveling to and fro.

As indicated, both the crank arms 24. and 25 are positioned between the central partition and the diaphragm 6 and the connections between said arms and their respective diaphragm connecting links is made in the chamber l0.

From the foregoing description of one embodiment et my invention it Will be apparent that my improved construction provides a meter in which maximummeasuring capacity is coupled with material economy of space. Furthermore, the capacity may be varied over a Wide range by varying the stroke or extent of travel of the diaphragme and the meter may be adjusted to register accurately under all conditions of flow by adjusting the angular relation between the cranks on the vertical shaft 17. l/Vhere the construction involves carrying a link connection through a partition Wall in the casing, the partition is rendered gas tight at the point or" passage by the means described or its equivalent with practically no loss of power and Without diminishing the accuracy of measurement.

I claim as my invention:

l. A meter comprising valve mechanism and actuating means therefor, including a crank shait, a crank at each end thereof, one ot' said cranks being movably secured to said shaft, a separate arm rigidly secured to said shaft, and means interposed between said separate arm and said movable crank for eil'ecting relative movement of rotation be tween the shaft and said movable crank.

2. In a meter the combination of valve mechanism and actuating means therefor including a crank shaft, a crank at each end thereof, one ot said cranks being movably` secured to said shaft, a separate arm rigidly secured to said shaft, means interposed between said separate arm and saidmovable crank for eil'ecting relative movement `of rotation between the shaft and said movable crank, and means for retaining said shaft and said movable crank in any desired operative position with :respect to each other.

3. In a meter, the combination of the partition 7 having a liexible portion, a diaphragm 5, a diaphragm 6, a crankshaft 17, crank arms 24 and 25 operatively con-` nected to said crank shaft, a link 35 connecting diaphragm 6 With crank arm 24 and a link 34 extending through said "flexible portion of the partition and operatively connecting diaphragm 5 with crank arm 25.

ARNO n. Hunrrie; 

